﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Ex03Dll
{
    /// <summary>
    /// 第三方公司提供计算器类，并做了封装DLL
    /// </summary>
    public class Calculator
    {
        public int Add(int n1, int n2)
        {
            return n1 + n2;
        }
    }
}
